Final answer:
The distance between the point of lowest elevation and the point of highest elevation is 20,502 feet.
Step-by-step explanation:
The distance between the point of lowest elevation, which is 282 ft below sea level (Death Valley, California), and the point of highest elevation, which is 20,320 ft above sea level (Mount McKinley, Alaska), can be calculated by taking the sum of their absolute values.
Distance = |282| + |20320| = 282 + 20320 = 20502 feet
Therefore, the distance between these two points is 20,502 feet.